Like dr bill, I also have the opportunity to dive every week so I don't remove my batteries. I dive with a Perdix and a Chromis as backup. Shearwater computers use AA batteries. Since alkaline batteries can leak and destroy your computer, Shearwater recommends on their website to remove the battery if you will not be using it for two months or more. You can use a variety of AA batteries in these computers so I don't know if you would need to remove lithium, but I would if I were not going to dive for a while but the Scubapro, no I wouldn't remove the battery.